#!/usr/bin/env bash

set -xeuo pipefail

[[ "$(id -u)" -eq 0 ]] || exec sudo "${0}" "${@}"

remove_uninstall() {
    [ -f "${0}" ] && rm -- "${0}"
    exit 0
}
trap remove_uninstall EXIT

/usr/local/bin/k3s-killall.sh ; echo "k3s-killall.sh exited ${?} ..."

WSYSCTL=$(which systemctl || true)

if [[ "${WSYSCTL}" != "" ]] ; then
    systemctl disable k3s
    systemctl reset-failed k3s
    systemctl daemon-reload
fi

WRCUPD=$(which rc-update || true)

if [[ "${WRCUPD}" != "" ]] ; then
    rc-update delete k3s default
fi

K3SSVC=$(ls /etc/systemd/system/k3s*.service || true)

if [[ "${K3SSVC}" != "" ]] ; then
    for unit in /etc/systemd/system/k3s*.service ; do
        unit_name="$(basename "${unit}")"
        systemctl stop "${unit_name}"
        [ -f "${unit}" ] && rm -f "${unit}"
    done
    systemctl daemon-reload
fi

K3SINIT=$(ls /etc/init.d/k3s* || true)

if [[ "${K3SINIT}" != "" ]] ; then
    set +x; echo 'Additional k3s services installed, skipping uninstall of k3s'; set -x
    exit
fi

for cmd in {kubectl,crictl,ctr} ; do
    if [ -f "{{ k3s_install_dir }}/${cmd}" ]; then
        rm -f "{{ k3s_install_dir }}/${cmd}"
    fi
done

for bin in {{ k3s_install_dir }}/k3s*; do
    [ -f "${bin}" ] && rm -f "${bin}"
done

[ -d /etc/rancher/k3s ] && rm -rf /etc/rancher/k3s
[ -d {{ k3s_node_data_dir | default('/var/lib/rancher/k3s') }} ] && rm -rf {{ k3s_node_data_dir | default('/var/lib/rancher/k3s') }}
[ -d /var/lib/kubelet ] && rm -rf /var/lib/kubelet

[ -f /usr/local/bin/k3s-killall.sh ] && rm -f /usr/local/bin/k3s-killall.sh